Subversion Repositories Kolibri OS

Rev

Blame | Last modification | View Log | RSS feed

  1. /*
  2.  * Mesa 3-D graphics library
  3.  *
  4.  * Copyright (C) 2012-2013 LunarG, Inc.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the "Software"),
  8.  * to deal in the Software without restriction, including without limitation
  9.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10.  * and/or sell copies of the Software, and to permit persons to whom the
  11.  * Software is furnished to do so, subject to the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice shall be included
  14.  * in all copies or substantial portions of the Software.
  15.  *
  16.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22.  * DEALINGS IN THE SOFTWARE.
  23.  *
  24.  * Authors:
  25.  *    Chia-I Wu <olv@lunarg.com>
  26.  */
  27.  
  28. #ifndef ILO_FORMAT_H
  29. #define ILO_FORMAT_H
  30.  
  31. #include "genhw/genhw.h"
  32. #include "ilo_core.h"
  33. #include "ilo_dev.h"
  34.  
  35. bool
  36. ilo_format_support_vb(const struct ilo_dev *dev,
  37.                       enum pipe_format format);
  38.  
  39. bool
  40. ilo_format_support_sol(const struct ilo_dev *dev,
  41.                        enum pipe_format format);
  42.  
  43. bool
  44. ilo_format_support_sampler(const struct ilo_dev *dev,
  45.                            enum pipe_format format);
  46.  
  47. bool
  48. ilo_format_support_rt(const struct ilo_dev *dev,
  49.                       enum pipe_format format);
  50.  
  51. bool
  52. ilo_format_support_zs(const struct ilo_dev *dev,
  53.                       enum pipe_format format);
  54.  
  55. int
  56. ilo_format_translate_color(const struct ilo_dev *dev,
  57.                            enum pipe_format format);
  58.  
  59. /**
  60.  * Translate a pipe format to a hardware surface format suitable for
  61.  * the given purpose.  Return -1 on errors.
  62.  *
  63.  * This is an inline function not only for performance reasons.  There are
  64.  * caveats that the callers should be aware of before calling this function.
  65.  */
  66. static inline int
  67. ilo_format_translate(const struct ilo_dev *dev,
  68.                      enum pipe_format format, unsigned bind)
  69. {
  70.    switch (bind) {
  71.    case PIPE_BIND_RENDER_TARGET:
  72.       /*
  73.        * Some RGBX formats are not supported as render target formats.  But we
  74.        * can use their RGBA counterparts and force the destination alpha to be
  75.        * one when blending is enabled.
  76.        */
  77.       switch (format) {
  78.       case PIPE_FORMAT_B8G8R8X8_UNORM:
  79.          return GEN6_FORMAT_B8G8R8A8_UNORM;
  80.       default:
  81.          return ilo_format_translate_color(dev, format);
  82.       }
  83.       break;
  84.    case PIPE_BIND_SAMPLER_VIEW:
  85.       /*
  86.        * For depth formats, we want the depth values to be returned as R
  87.        * values.  But we assume in many places that the depth values are
  88.        * returned as I values (util_make_fragment_tex_shader_writedepth() is
  89.        * one such example).  We have to live with that at least for now.
  90.        *
  91.        * For ETC1 format, the texture data will be decompressed before being
  92.        * written to the bo.  See tex_staging_sys_convert_write().
  93.        */
  94.       switch (format) {
  95.       case PIPE_FORMAT_Z16_UNORM:
  96.          return GEN6_FORMAT_I16_UNORM;
  97.       case PIPE_FORMAT_Z32_FLOAT:
  98.          return GEN6_FORMAT_I32_FLOAT;
  99.       case PIPE_FORMAT_Z24X8_UNORM:
  100.       case PIPE_FORMAT_Z24_UNORM_S8_UINT:
  101.          return GEN6_FORMAT_I24X8_UNORM;
  102.       case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
  103.          return GEN6_FORMAT_I32X32_FLOAT;
  104.       case PIPE_FORMAT_ETC1_RGB8:
  105.          return GEN6_FORMAT_R8G8B8X8_UNORM;
  106.       default:
  107.          return ilo_format_translate_color(dev, format);
  108.       }
  109.       break;
  110.    case PIPE_BIND_VERTEX_BUFFER:
  111.       if (ilo_dev_gen(dev) >= ILO_GEN(7.5))
  112.          return ilo_format_translate_color(dev, format);
  113.  
  114.       /*
  115.        * Some 3-component formats are not supported as vertex element formats.
  116.        * But since we move between vertices using vb->stride, we should be
  117.        * good to use their 4-component counterparts if we force the W
  118.        * component to be one.  The only exception is that the vb boundary
  119.        * check for the last vertex may fail.
  120.        */
  121.       switch (format) {
  122.       case PIPE_FORMAT_R16G16B16_FLOAT:
  123.          return GEN6_FORMAT_R16G16B16A16_FLOAT;
  124.       case PIPE_FORMAT_R16G16B16_UINT:
  125.          return GEN6_FORMAT_R16G16B16A16_UINT;
  126.       case PIPE_FORMAT_R16G16B16_SINT:
  127.          return GEN6_FORMAT_R16G16B16A16_SINT;
  128.       case PIPE_FORMAT_R8G8B8_UINT:
  129.          return GEN6_FORMAT_R8G8B8A8_UINT;
  130.       case PIPE_FORMAT_R8G8B8_SINT:
  131.          return GEN6_FORMAT_R8G8B8A8_SINT;
  132.       default:
  133.          return ilo_format_translate_color(dev, format);
  134.       }
  135.       break;
  136.    case PIPE_BIND_STREAM_OUTPUT:
  137.       return ilo_format_translate_color(dev, format);
  138.       break;
  139.    default:
  140.       assert(!"cannot translate format");
  141.       break;
  142.    }
  143.  
  144.    return -1;
  145. }
  146.  
  147. static inline int
  148. ilo_format_translate_render(const struct ilo_dev *dev,
  149.                             enum pipe_format format)
  150. {
  151.    return ilo_format_translate(dev, format, PIPE_BIND_RENDER_TARGET);
  152. }
  153.  
  154. static inline int
  155. ilo_format_translate_texture(const struct ilo_dev *dev,
  156.                              enum pipe_format format)
  157. {
  158.    return ilo_format_translate(dev, format, PIPE_BIND_SAMPLER_VIEW);
  159. }
  160.  
  161. static inline int
  162. ilo_format_translate_vertex(const struct ilo_dev *dev,
  163.                             enum pipe_format format)
  164. {
  165.    return ilo_format_translate(dev, format, PIPE_BIND_VERTEX_BUFFER);
  166. }
  167.  
  168. #endif /* ILO_FORMAT_H */
  169.